title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

DC-DC Converters Bus Converter-Power Module TypeInstruction Manual(1) Output voltage adjustment by potentiometer!By connecting the external potentiometer (VR1) as shown inFig.3.4, output voltage becomes adjustable.!The wiring to the potentiometer should be as short as possible.As the ambient temperature fl uctuation characteristics deterioratedepending on the types of resistors and potentiometers, pleaseuse resistors and potentiometers of the following specifi cations:Potentiometers ..... Cermet type, coeffi cient less than±300ppm/C5V1kΩ0.01μF4.7kΩVTRM-S+VOUT+SFig.3.6 VTRM circuitDCS1400BVTRM-S-VOUTExternal VR12kΩFig.3.4 Connecting External Devices(2) Output voltage adjustment by external voltage!By applying a voltage externally to VTRM, output voltage becomesadjustable.Output level is able to be calculated by following equation whenthe VTRM terminal voltage. However, it cannot be set beyond theupper limit of the output voltage variable range.The voltage betweenOutput voltage [V] = VTRM and -S[V]×Rated output voltage [V] ...11.0 [V]!Do not set the external applied voltage of the terminal to -0.3V orless, and 5.0V or more.!When the VTRM terminal voltage is 4.5V or higher, the rated voltageis output.!Do not set the VTRM terminal voltage within the range of 4.0 to4.5V, because the output voltage to be indefi nite.Output voltage130%120%110%100%90%80%70%60%Adjustable Range50%Out of Specification40%30%20%10%0%0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 4.0 4.2 4.4 4.6 4.6 5.0VTRM[V]3.7 Adjustable constant current range!Output current for the constant current can be adjusted by connectingexternal resistors to ITRM or by applied voltage externally.!When the output current is adjusted to around 0A, the unit mightbe unstable.!When the output current adjustment is not used, open the ITRMpin.(1) Constant current adjustment by potentiometer!By connecting the external potentiometer (VR2) as shown inFig.3.7, output current for constant current becomes adjustable.!The wiring to the potentiometer should be as short as possible.As the ambient temperature fl uctuation characteristics deterioratedepending on the types of resistors and potentiometers, pleaseuse resistors and potentiometers of the following specifi cations:Potentiometers ..... Cermet type, coeffi cient less than±300ppm/C+VOUT+SDCS1400BITRM-S-VOUTExternal VR22kΩFig.3.7 Connecting External DevicesFig.3.5 VTRM-Output VoltageDCS-10